High strength pressure-sensitive adhesives

ABSTRACT

PRESSURE-SENSITIVE ADHESIVES HAVING IMPROVED COHESIVE STRENGTH ARE OBTAINED BY REACTING AN ACRYLIC INTERPOLYMER CONTAINING AN INTERPOLYMERIZED ACRYLIC MONOMER CONTAINING ONE OR MORE GROUPS HAVING REACTIVE HYDROGEN ATOMS SUCH AS A HYDROXYALKYL ESTER OR AN ETHYLENICALLY UNSATURATED CARBOXYLIC ACID WITH A METAL ALKOXIDE, CHELATED METAL ALKOXIDES SUCH AS CHELATED TITANIUM ESTERS BEING PARTICULARLY PREFERRED. ADHESIVES PRODUCED IN THIS MANNER HAVE IMPROVED COHESIVE STRENGTH AND SHRINK RESISTANCE ON BACKINGS WHILE MAINTAINING GOOD TACK AND ADHESIVE PROPERTIES.



